N-Hydroxyphthalimide → HCID 23353087, Verbindung

HRID 234875Notizen

Reaktionsgleichung

Reaktionsgleichung von HRID 234875
[OH:1][N:2]1[C:6](=[O:7])[C:5]2=[CH:8][CH:9]=[CH:10][CH:11]=[C:4]2[C:3]1=[O:12].C1(P(C2C=CC=CC=2)C2C=CC=CC=2)C=CC=CC=1.O[CH2:33][CH2:34][CH2:35][C:36]#[C:37][C:38]1[CH:43]=[CH:42][C:41]([F:44])=[CH:40][CH:39]=1.N(C(OCC)=O)=NC(OCC)=O>O1CCCC1>[F:44][C:41]1[CH:42]=[CH:43][C:38]([C:37]#[C:36][CH2:35][CH2:34][CH2:33][O:1][N:2]2[C:3](=[O:12])[C:4]3=[CH:11][CH:10]=[CH:9][CH:8]=[C:5]3[C:6]2=[O:7])=[CH:39][CH:40]=1

Komponenten

6

Edukt 4

HCID 10665N-HydroxyphthalimideHCID 11776TriphenylphosphineHCID 220568ethyl N-ethoxycarbonyliminocarbamateHCID 189879965-(4-Fluorophenyl)-4-pentyn-1-ol

Produkt 1

HCID 23353087HCID 23353087, VerbindungAusbeute 82 %

Reagenzien, Katalysatoren, Lösungsmittel 1

HCID 8028TetrahydrofuranLösungsmittel

Versuchsvorschrift

33.4 g (0.205 mol) of N-hydroxyphthalimide and 53.8 g (0.205 mol) of triphenylphosphine were added to a solution of 33.1 g (0.186 mol) of 5-hydroxy-1-(4-fluorophenyl)-1-pentine in 430 ml of tetrahydrofuran. 35.7 g (0.205 mol) of diethyl azodicarboxylate were then added in the course of 2.5 hours with monitoring of the temperature (max. 40° C.). Stirring was carried out overnight at room temperature, the mixture was evaporated down under reduced pressure and the residue was taken up with 300 ml of dichloromethane. The solution was washed twice with sodium carbonate solution and once with saturated sodium chloride solution. After drying and evaporating down, the crude product was purified by chromategraphy over silica gel. The eluent used was initially dichloromethane/n-hexane and subsequently pure dichloromethane. Yield: 82%; mp.: 85°-88° C.

Aufarbeitung

  1. customthe mixture was evaporated down under reduced pressure
  2. washThe solution was washed twice with sodium carbonate solution and once with saturated sodium chloride solution
  3. customAfter drying
  4. customevaporating down
  5. customthe crude product was purified by chromategraphy over silica gel

Quellen und Nachweise

ORD-Eintrag
ord-62a8d454f04d406ba642f72182331167
Quelldatensatz
uspto-grants-1997_01
Patentnummer
US05597776

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